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Table 2 Patient demographics and clinical characteristics of bone DLBCL

From: Clinical characteristics and prognostic factors of bone lymphomas: focus on the clinical significance of multifocal bone involvement by primary bone large B-cell lymphomas

Parameter uPB-DLBCL mPB-DLBCL SB-DLBCL
Total 37 23 23
Age range, years 15-89 17-82 29-82
Median age, years 53.0 60.0 54.0
Mean age, years 52.9 53.4 55.0
<60, n (%) 22(59.5) 11(47.8) 15(65.2)
≥60, n (%) 15(40.5) 12(52.2) 8(34.8)
Sex    
Male, n (%) 22(59.5) 14(60.9) 9(39.1)
Female, n (%) 15(40.5) 9(39.1) 14(60.9)
Male :female ratio 1.5:1 1.6:1 0.6:1
Race    
White, n (%) 33(89.2) 21(91.3) 17(73.9)
Black, n (%) 2(5.4) 1(4.3) 3(13.0)
Unknown, n (%) 2(5.4) 1(4.3) 3(13.0)
B symptoms, n (%) 7(18.9) 8(34.8) 8(34.8)
LDH    
Normal 23(79.3) 5(29.4) 8(57.1)
Elevated 6(20.7) 12(70.6) 6(42.9)
Lymph node involvement, n (%) 4(10.8)* 9(39.1)* 14(60.9)**
Bone marrow involvement, n (%) 3(8.1) 5(21.7) 7(30.4)
Number of bone sites, n (%)    
Unifocal 37(100.0) 0(0) 7(30.4)
Multifocal 0(0) 23(100.0) 16(69.6)
Sites, n (%)    
Appendicular 29(78.4) 10(43.5) 7(30.4)
Axial 8(21.6) 2(8.7) 9(39.1)
Both 0(0) 11(47.8) 7(30.4)
Stage, n (%)    
IE 30(81.1) 0(0) 1(4.3)
IIE 4(10.8) 0(0) 2(8.7)
IIIE 0(0) 0(0) 0(0)
IVE 3(8.1) 23(100.0) 20(87.0)
  1. Abbreviations uPB-DLBCL: primary bone diffuse large B-cell lymphoma with unifocal bone disease; mPB-DLBCL: primary bone diffuse large B-cell lymphoma with multifocal bone disease; SB-DLBCL: secondary bone diffuse large B-cell lymphoma.
  2. *Patients with regional lymph node enlargement.
  3. **Patients with both regional and supraregional or systemic lymph node involvements.